Hi guys and please welcome me into the Audi community. Hello to everyone 😂
I’ve got a slight issue with an Audi a4 2.0 tdi with engine code CAG year 2010
now this is what has happened
drove the car fine no problems at all then turned it off went shopping came back out and wouldn’t start so had the AA come out and have a look and said the fuel pump in the tank isn’t pumping any diesel so fast forward a couple of days, we fitting another pump in the tank which is pumping out fuel but the car still won’t start, we’ve also replaced the fuel filters and got fuel up to the HPFP
heres the things I’ve currently checked
fuel getting to HPFP
theres no filling in the HPFP
no check engine light
ive got fuel to the injectors
i used a duty meter for the injectors when cranking and got 8.3% duty 
checked the throttle flap wasn’t stuck shut

is there anything else I should be looking at?

I do really appreciate any help on this one 

Thanks in advance

camshaft or crank sensor  be iffy  bud 

I’ve just got the vcds on it and when cranking here’s the readings

Crank position sensor reading 224rpm

cam sensor reading 107 rpm

would this look correct?

thanks

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 

Not sure what the figures should be for the cam or crank sensors. Another thought isn't there a fuel pump module? Could this be at fault? 

On 3/29/2023 at 4:20 PM, Welsh_ads said:

Hi guys and please welcome me into the Audi community. Hello to everyone 😂
I’ve got a slight issue with an Audi a4 2.0 tdi with engine code CAG year 2010
now this is what has happened
drove the car fine no problems at all then turned it off went shopping came back out and wouldn’t start so had the AA come out and have a look and said the fuel pump in the tank isn’t pumping any diesel so fast forward a couple of days, we fitting another pump in the tank which is pumping out fuel but the car still won’t start, we’ve also replaced the fuel filters and got fuel up to the HPFP
heres the things I’ve currently checked
fuel getting to HPFP
theres no filling in the HPFP
no check engine light
ive got fuel to the injectors
i used a duty meter for the injectors when cranking and got 8.3% duty 
checked the throttle flap wasn’t stuck shut

is there anything else I should be looking at?

I do really appreciate any help on this one 

Thanks in advance

hi,do you have an update on this please hope you got sorted. thanks

Very good question Stephen. 
Regrettably, our homeland original poster, hasn’t returned to the  forum since the day he first joined. Will we ever know?  
Kind regards,

Gareth. 

8 hours ago, alpha omega said:

hi,do you have an update on this please hope you got sorted. thanks

Hi yes it appeared to have 2 failed injectors which didn’t bring up any codes on the vcds.

bought 2 injectors which supposedly were tested and good but 1 was faulty, the car runs now but has a slightly misfire and still smells but thinking of driving the car to see if the ecu learn the driving characteristics and sorts itself out 

do you have a similar issue? Maybe I can help

8 hours ago, Magnet said:

Very good question Stephen. 
Regrettably, our homeland original poster, hasn’t returned to the  forum since the day he first joined. Will we ever know?  
Kind regards,

Gareth. 

Hi Gareth I may not of returned due to being busy with work but I will reply to any messages and help when I can, if you are ever stuck on a problem please feel free to message

many thanks 👍